689922 has 12 divisors (see below), whose sum is σ = 1494870. Its totient is φ = 229968.

The previous prime is 689921. The next prime is 689929. The reversal of 689922 is 229986.

It can be written as a sum of positive squares in only one way, i.e., 594441 + 95481 = 771^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (689921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19147 + ... + 19182.

2⁶⁸⁹⁹²² is an apocalyptic number.

689922 is an abundant number, since it is smaller than the sum of its proper divisors (804948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689922 is a wasteful number, since it uses less digits than its factorization.

689922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38337 (or 38334 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 689922 is about 830.6154344822. The cubic root of 689922 is about 88.3622293818.

The spelling of 689922 in words is "six hundred eighty-nine thousand, nine hundred twenty-two".